費米 12 年全天空伽馬射線地圖
Fermi's 12-year All-Sky Gamma-ray Map
發表日期:2024-08-21
忘掉 X 射線視力吧--想象一下用伽馬射線視力能看到什麼! 這張特色全天空圖展示了美國國家航空航天局費米伽馬射線太空望遠鏡眼中的宇宙。 費米望遠鏡能看到的光的能量是人眼所能看到的光的十億倍,這張地圖綜合了費米望遠鏡 12 年的觀測結果。 顏色代表伽馬射線源的亮度,亮度較高的伽馬射線源顏色較淺。 中間突出的條紋是銀河系的中心平面。 散佈在銀河系平面上下的紅色和黃色小點大部分是非常遙遠的星系,而在銀河系平面內的大部分是附近的脈衝星。 填滿影像的藍色背景是來自遙遠伽馬射線源的漫射光,這些伽馬射線源過於暗淡,無法單獨探測到。 有些伽馬射線源仍未被確認,也是研究課題--目前沒有人知道它們是什麼。
原文:Forget X-ray vision — imagine what you could see with gamma-ray vision! The featured all-sky map shows what the universe looks like to NASA's Fermi Gamma-ray Space Telescope. Fermi sees light with energies about a billion times what the human eye can see, and the map combines 12 years of Fermi observations. The colors represent the brightness of the gamma-ray sources, with brighter sources appearing lighter in color. The prominent stripe across the middle is the central plane of our Milky Way galaxy. Most of the red and yellow dots scattered above and below the Milky Way’s plane are very distant galaxies, while most of those within the plane are nearby pulsars. The blue background that fills the image is the diffuse glow of gamma-rays from distant sources that are too dim to be detected individually. Some gamma-ray sources remain unidentified and topics of research — currently no one knows what they are.
※ 本文由萌芽機器人自動轉貼自每日一天文圖(Astronomy Picture of the Day,APOD),原文為英文,正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理,內容僅供參考,若有任何錯誤之處還請見諒!
關於每日一天文圖:每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務,網站每天提供一張影像或圖片,並由天文學家撰寫扼要說明其特別之處。